Home / 61,681.77-85,136.81-40,225.05

Finding the Fourth Proportional to 61,681.77, 85,136.81 and 40,225.05

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Solution

The fourth proportional to 61,681.77, 85,136.81 and 40,225.05 is: 55,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,681.77 : 85,136.81 = 40,225.05 : x
  2. Step 2: Convert to fraction form
    61,681.77/85,136.81 = 40,225.05/x
  3. Step 3: Cross multiply
    61,681.77x = 85,136.81 × 40,225.05
  4. Step 4: Simplify right side
    61,681.77x = 3,424,632,237.97
  5. Step 5: Solve for x
    x = 3,424,632,237.97/61,681.77
  6. Step 6: Final answer
    x = 55,520.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.